2003 f350 water leak on passanger side what is that
Most probably your AC drain is clogged or another water drain, like the sunroof (if you have one). If it's coolant, then you need a new heater core.
Normal AC operation and condensation will make a puddle of clear water under the passenger side. If you're seeing an excessive amount of clear water (enough to make a big puddle), you should check to see if the AC compressor is always engaged. Ford stopped putting a diode in the AC clutch circuit and it tends to burn the contacts on the AC relay and make them stick closed. Will run the battery low after sitting for a day or so too. Make sure that it's clear water and no more than about a 1 foot puddle. If it is - enjoy your properly operating AC.
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